package demo03;

public class StudentTest {
    public static void main(String[] args) {
        Student Lai = new Student();
        System.out.println(Lai.name);
        System.out.println(Lai.age);
        System.out.println(Lai.weight);

        Lai.age = 20;
        Lai.name = "jie";
        Lai.weight = 68.6;

        System.out.println(Lai.name);
        System.out.println(Lai.age);
        System.out.println(Lai.weight);

        Lai.study();
        Lai.sleep();

    }

}
